Sting and his wife, actress Trudie Styler, will be joined by some big names on April 17 for the biennial Rainforest Fund Benefit Concert at Carnegie Hall. Paul Simon will join James Taylor, Dionne Warwick, Ivy Levan, trumpeter Chris Botti and opera singer Renée Fleming in campaigning for environmental conservation and to help the indigenous people who live in the Amazon rainforest in Brazil and over 20 other countries. “This year is the Rainforest Fund’s 25th anniversary,” Styler and Sting said in a statement, “and its work to protect rain forests around the globe for the people who live there and for all of us is more important than ever.” Sting and Simon have spent the winter on the road together as part of a joint arena tour.